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| modulation tone frequency | |||
| modulation frequency | |||
| fréquence de modulation: 151 phrases in 12 subjects |
| Chemistry | 1 |
| Communications | 72 |
| Computers | 1 |
| Electronics | 46 |
| General | 2 |
| High energy physics | 7 |
| Information technology | 16 |
| Materials science | 1 |
| Medical appliances | 1 |
| Piezoelectric crystals | 2 |
| Radio | 1 |
| Technology | 1 |
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